Does anyone know how to solve this?
Note: write the answer as a fraction please :)

2x minus y equals 6, x plus y equals negative 3

Sam is a waiter at a local restaurant where he earns wages of $5 per hour sam figures that he also eams about $3 in tips for each person he serves sam works 6 hours on a particular day. if n represents the number of people sam serves that day, which of the following functions could sam use to figure ehis total earings for the do o a. en) = 30 o b. en) = 5n+ 18

You buy 4 items that cost 2.69 14.45 8.05 13.95 what is the estimated total round to the nearest dollar